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Finding the Fourth Proportional to 119,701.80, 165,255.93 and 79,470.52

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Solution

The fourth proportional to 119,701.80, 165,255.93 and 79,470.52 is: 109,714.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,701.80 : 165,255.93 = 79,470.52 : x
  2. Step 2: Convert to fraction form
    119,701.80/165,255.93 = 79,470.52/x
  3. Step 3: Cross multiply
    119,701.80x = 165,255.93 × 79,470.52
  4. Step 4: Simplify right side
    119,701.80x = 13,132,974,277.04
  5. Step 5: Solve for x
    x = 13,132,974,277.04/119,701.80
  6. Step 6: Final answer
    x = 109,714.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.